Binding means for loose leaves



I May 3, 1949.

H. L] CASTRI Filed Aug. 17, 1945 BINDING MEANS FOR LOOSE LEAVES v INVENTOR HARRY L: CA'STRI BY g3; ATTORNEY Patented May 3, 1949 UNITED STATES PATENT OFFICE BINDING MEANS FOR LOOSE LEAVES Harry Li Castri, New York, N. Y.

Application August 17, 1945, Serial No. 611,137

3 Claims. 1

This invention relates to new and useful improvements in binding means for loose leaf pages.

More particularly, the invention proposes binding means which may be mounted upon loose leaf covers.

Specifically, the invention proposes a new and improved binding means, as mentioned, which is characterized by a pair of superimposed slidably connected strips. It is proposed to provide the bottom one of said strips with a plurality of longitudinally spaced transverse loop portions. It is proposed to provide the top one of said strips with a plurality of complementary loop portions normally disposed beneath said loop portions. When said strips are relatively shifted said loop portions are separated and are capable of engaging the ends of slots in the loose leaf pages, as will become clear as this specification proceeds.

The invention proposes a modified form in which a base strip is mounted beneath and slidably connected with the bottom one of said pair of superimposed strips. This base strip is adapted to be mounted upon the back of a loose leaf book.

Another object of the invention is the construction of an article as mentioned which is simple and durable and which may be manufactured and sold at a reasonable cost.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the appended claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawing forming a material part of this disclosure- Fig. 1 is a perspective view of binding means for loose leaf pages constructed in accordance with one form of this invention.

Fig. 2 is a transverse sectional view taken on the line 22 of Fig. 1, to which a sectional view of a loose leaf cover has been added.

Fig. 3 is a longitudinal sectional view taken on the line 3-3 of Fig. 2 showing the binder in a closed position with loose leaf pages added.

Fig. 4 is a fragmentary vertical sectional view taken on the line 44 of Fig. 1.

Fig. 5 is a fragmentary plan view of Fig. 1, to which a loose leaf page has been added.

Fig. 6 is a fragmentary plan view similar to Fig. 5 but illustrating the parts in a different position.

Fig. 7 is a fragmentary plan view of one type of slot in a loose leaf page which may be used with the binding means in accordance with this invention.

Fig. 8 is a view similar to Fig. '7 but illustrating another type of slot.

Fig. 9 is a perspective view similar to Fig. 1 but illustrating a modified form of binding means.

Fig. 10 is a fragmentary vertical sectional view taken on the line l0-l 0 of Fig. 9.

The binding means for loose leaf pages, in accordance with this invention, includes a pair of superimposed slidably connected strips 10 and l I. The bottom strip II is formed with side flanges 12 which engage along the edges of the top strip l0. One or more headed pegs M are mounted on one of the strips and engage into slots l5 formed on the other of the strips for limiting relative sliding of said strips. The top strip I0 is provided with an end lug l6 by which it may be conveniently gripped and moved.

The bottom strip I l is provided with a plurality of longitudinally spaced transverse loop portions l8. The top strip I0 is provided with a plurality of complementary loop portions [9 normally disposed beneath the loop portions I8, and when said strips are relatively shifted, said loop portions are separated to engage the ends of slots in loose leaf pages.

In Figs. 5 and 6 a loose leaf page 20 is illustrated with a T-shaped slot 2 I. The stem portion of the T-shaped slot 2| may be slipped over the aligned loop portions l8 and [9. Then the top strip 10 may be moved so as to separate the loop portions [8 and I9 to cause them to engage the ends of the elongated sections of the T-shaped slots 21.

In Fig. 8 another loose leaf page 22 is illustrated provided with an L-shaped slot 23. Pages of this type may also be engaged upon the binding means. It is proposed that the bottom strip I I be attached with rivets 25 or other fastening elements to the back 26 of a loose leaf cover 21.

The operation of this form of the invention may be understood from the following:

The binding means is mounted upon the back of loose leaf covers as illustrated in Fig. 2. Pages such as illustrated in Figs. 7 and 8, but having one slot for each pair of loops [8 and I9, may be mounted on the binding means. To do this it is necessary that the top strip H] be pulled outwards as illustrated on the drawings. The pages are then engaged in position. The top strip I0 is then pushed inwards which moves the bottom loops 19 relative to the top loops Hi. The bottom loops engage one of the ends of the slots in the pages. If the pages have T-slots as shown in Fig. 7 the pages will be shifted during the latter part of the motion of the top strip I0, so that the loops l8 and I9 engage the ends of the elongated sections of the T-slots. If the slots are L-shaped, as illustrated in Fig. 8, the pages will not be shifted when the top strip I is pushed back into position.

In Figs. 9 and 10, a modified form of the invention has been disclosed which is very similar to the prior form, distinguishing merely in the fact thata base strip 30 is disposed beneath and slidably connected with the bottom strip II. This base strip 39 is slidably connected with the bottom strip I I by several headed studs 35 mounted on one of the strips and engaging slots 32 formed in the other of the strips. The base strip 30 is intended to be attached to the back of a loose leaf cover. The bottom strip II is provided with an end lug portion 33 by which it may be moved in relation to the base strip 30. The base strip 30 may be attached to the back of a loose leaicover. with the rivets 34.

In other respects this form of the invention isiisientical to ,the prior form and like parts are identified by like reference numerals.

Thenoperationof this formpfthe invention is similar to the prior form,.distinguishing merely intheiact that the bottom strip H may be moved in one direction, and the top strip l1! may be simultaneously moved in the other direction .to sepa ate. or to align the loops I18 and 19. With this construction it is possible to use pages havingT shaped slots, and it is possible to engage and remove said pages from .thebinding means without the loop portions engaging the ends of the .slQl S and. shifting the pages.

'gwhile I haveillustrated and described the preferred embodiments of my invention, it is to be understood that I do notlimit myself to the precise constructions herein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as defined the appended claims.

"Having thus described my invention, what I claim as new and desire to secure by United States Letters Patent is:

- 1.-"'Binding means for loose pages, comprising a pair of superimposed slidably connected strips, the bottom one of said strips having a plurality of longitudinally spaced transverse loop portions, and the top one of said strips having a plurality of complementary loop portions normally dispose-d beneath said loop portions, and when said strips are relatively shifted said loop portions are separated to engage the ends of slots in loose leaf pages.

2. Binding means for loose pages, comprising a pair of superimposed slidably connected strips, the bottom one of said strips having a plurality of longitudinally spaced transverse loop portions, and the top one of said strips having a plurality of complementary loop portions normally disposed beneath said loop portions, and when said strips are relatively shifted said loop portions are separated to engage the ends of slots in loose leaf pages, said bottom strip being provided with side flanges engaging along the edges of said top strip.

36. Binding m ans forloose vpa es, comprisin a pair f, superi p sed slida ly conne ted st ip the bottomone of said strips havinga plurality of longitudinally spaced transverse loop por ons, nd t t o of sa trip hav n .aplurali y of vcornplementary loop portions normally disposed beneath said 'IOOP'IJOIlJlOIIS, and when said strips are relatively shifted said loop portions are separated to engage the ends of slots in loose leaf pages, said top strip being provided at one end with a lug by which it may be moved.

HARRY LI GASTRI.

REFERENCES CITED vThe following references are of record the file of this patent:

UNITED STATES PATENTS N mbe a e Pate 6 ,176 Gresham J1me JZLglQQfl FOREIGN- PATENTS Number Country Date 236,001 vGermany June .216, 1911 

